Mechanical movement.



A. SEARS, DECD. A. r. ssms, ADMINISTRATOR. MECHANICAL MOVEMENT. APPLICATION FILED AUG. 29,1907.

Patented May 11, 1909. I

wll mzw R her canbeturned easily ber and so that the dr ven member will be ALFREDSEARS, ,OF \VOROESTER, MASSACHUSETTS; ALFRED F. SEARS SEARS, DECEASED.

SAID ALFRED ADMINISTRATOR OF mnonenrcrlii MovEivrnN'r.

Application filednugust Specification of Letters Patent.

PatentedMay 11, 1909.

29, 1907. serial No. 390,585.

To all whomitona y concern:

Beit knownthat I, ALF ED SEARS, a citizen oftheiUnited State s, residing at Worcester, in the county of Worcesterand Massachusetts, ave invented a new and i seful Mechanical Movement, of which the following is a specification.

This invention relates movement which, while capable of general use, is especially useful for that class of machines inwhich a more or less heavy weight has to be lifted and lowered at times and held in its raisedorintermediate positions. One example of such a use oftheinvention isin clothes-,driers, but it willbe understood that thereare many others.

The principal obiects ofthe invention are to provide a simple, convenient and inexpensive construction, whereby a member can be rotated from the driving member, preferably of larger circumference, andeach preferably being in the form of a wheel, in such away that the drivenmemby the driving memsecurely locked. against independent motion; that .is, motion impartedito .it in any we except by or ,through the driving member; also to. ,rovide a simplified.construction for accomp ishingthese results; and to provide an arrangement which .will be capable of other uses as will be explained hereinafter.

Reference is to be hadto the accompanying drawings which form-partof this specification, and in which- Figure -1 isafront elevation of a clothes drier showing-how oneform of this invention may be applied thereto. Fig. 2- is asectional viewof the sameon the line 22 of Fig. 1. Fig. 3 is a f-rontelevation of a stationary standard on the clothes drier for supporting certain operating parts. Fig. .4 is a front elevation of the driving member with the driven member removed therefrom. Fig. 5 is a front view of the driven member. Fig. 6 is a vertical sectional view of the driving and driven members with the parts located adjacent thereto, and Fig. 7 is a similar view showing a slight modification.

While the drawings show a clothes drier, it will be understood that the invention is applicable to any ordinary machinery in which one part 10 is in fixed position, and another part 11 is intended to be raised and lowered either by hand or machinery. In

State of I to a mechanical driven l ber,

the present case the stationary part 10 is shown as provided with a bracket 12 which extends up a certain distance and .is provided with a fixed stud 13. Onthis studis journaled the driven member 141 whichhas a hub 15 extending to the rearof the stud. The drivenmember is held on the studby a cotter pin 16, or in any'other. desired manner. This driven member is shown in the form of a sheave, over which passes a belt, cord, or chain 17 ,the latter being connected with a sheave 18 on themovable member 11 on the machine to which the invention is applied; In the present case the flexible connection 17 is secured to the web of the sheave through perforations therein, and is intended to bewound upon the same as upon a drum. On the back of the driven memor located in any other position so as to rotate therewith, are a series ofprojections 20 preferably cast integral with the driven member, which will be described hereinafter.

-Mounted to rotate on the hub 15 is the driving member 21. This driving member itself consists of an ordinary sheave, or pulley over-which passes a flexible connection 22 in the form of a cable, chain, or cord. This flexible connection passesbetween pulleys 23 on a-bracket 24, andextends down between these pulleys into such position that itmay bereadily operated frombelow. But it will be understood that it may be operated in any desiredway, and infact, both of the sheaves are illustrated merely to show a practical embodimentof the invention, as anyother power transmitting mechanism can be substituted therefor.

Fixedly connectedwith the driving memher, and preferably secured to the f ace thereof is an eccentric 25. stance, the eccentric and driving member areprovided with a perforation 26 fitting the hub 15,,sothat botlrofthese arts, being fixed together, are journaled on t is hub,

Mounted to turn freely on the eccentric is a toothed wheel 27 having an arm 28 secured thereto and extending beyond the periphery of the driving member. This toothed wheel is provided with a smaller number of teeth 29 than is the number of projections 20, and the teeth are intended to mesh with these projections, as the toothed member gyrates on the eccentric during the rotation of the latter. It is intended that the arm 28 be held in fixed position in ordinary operations by means of a In the present into rotate at a slower rate of speed in the opcleat 30 or in any other desired way. When be made of castings requiring very little mathe parts are constructed in this way the chining in manufacture, and being so constructed and put together that there is very to turn and the toothed wheel to gyrate or littleprobability of their getting out of order move in an orbital ath. This path is such I in use. that as it moves about it will engage suc- While I have illustrated and described a cessively the cylindrical rojecti'ons 20 and preferred form of the invention and set forth rotate the wheel 14 at a slbwer rate of speed certain ways in which it may be utilized in than that at which the wheel 21 moves and practice, in the same direction. On account of the tions may be made therein by any person curved sides and general triangular shape of skilled in the art, either to apply it in the the teeth 29, the cylindrical projections 20 same way, or to apply it to the many diifermove along them easily without excessive ent uses to which it is adapted without defriction. It will be seen that this manner of parting from the scope of the invention as transmission of power is very efiicient, as expressed in the claims. Therefore, I do not very little power imparted to the wheel 21 i wish to be limited to the particular form will eXert considerable power on the wheel 14 shown or use described, but with a corres onding reduction in speed. What I do claim is:- Moreover the iving of the arm 28 prevents 1. In a mechanical movement, the combiany motion bein imparted to the toothed nation of a fixed support, a stud projecting wheel, and from iiiat to the eccentric by the therefrom, a wheel having a hollow hub wheel 14. In other Words, the latter wheel is loosely mounted on said stud,

ber journaled on said hub adjacent to the the shape of the teeth 29 in member, and a toothed wheel eccentucand projections 20. On account of this it ally mounted with respect to the hub said first named wheel having a series of projections for engaging the teeth of the toothed Wheel.

2. In a mechanical movement, the combination of a support, a stud projecting therefrom, a wheel having a hollow hub j ournaled on said stud, a driving member journaled on her 11, there should be any breakage, or if the flexible member 22 should be accidentally released, the movable member cannot drop. This is of use in many different arts, as will readily be understood.

nother way in which the device can operate for other purposes is to fix the wheel or will be seen that if in lifting the movable memj l I mounted with respect to the hub adjacent to the face of the wheel and engaging the driving member, said wheel having a series of projections for engaging the teeth of the toothed wheel, and means whereby said first named wheel may be held against rotation whereby the toothed wheel will be rotated by the rotation of the driving member, but

[in the opposite direction, and the driving member cannot be rotated by the rotation of the toothed wheel.

In testimony whereof I have hereunto set my hand, in the presence of two subscribing otherwise leaving the arm 28 free, then the rotation of the wheel 21 will cause the arm posite direction, but the difference in speed will not be as great as is the case when the device is set up as described above. In order to take advantage of the latter operation, it will be understood by any skilled mechanic that a wheel 270 or any other mechanical against rotation as by The only witnesses.

motion possible is throu 'h the operation of the main Wheel 21. It will be seen that these ALFRED SEARS results are obtained in a most simple and Witnesses:

convenient manner by the use of very few ALBERT E. FAY, parts, such parts being of such a nature as to 1 O. FORREST WEssoN.

I am aware that many modifica' said hub, a toothed wheel eccentrically 

